[content/browser/resources] Add DIR_METADATA files.

Generate DIR_METADATA files
and remove metadata from OWNERS files
for //content/browser/resources.

Bug: 1113033
Change-Id: Ic84b891c4f67830b63e3dad1dde6f5cdd5f26429
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2472590Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Commit-Queue: Norman Rosas <normando@google.com>
Cr-Commit-Position: refs/heads/master@{#821044}

content/browser/resources/appcache/DIR_METADATA

+monorail {
+  component: "Blink>Storage>AppCache"
+}
+
+team_email: "storage-dev@chromium.org"

content/browser/resources/appcache/OWNERS

@@ -4,6 +4,3 @@ mek@chromium.org
 # Secondary
 jsbell@chromium.org
 pwnall@chromium.org
-
-# TEAM: storage-dev@chromium.org
-# COMPONENT: Blink>Storage>AppCache

content/browser/resources/conversions/DIR_METADATA

+monorail {
+  component: "Internals>ConversionMeasurement"
+}
+
+team_email: "privacy-sandbox-dev@chromium.org"

content/browser/resources/conversions/OWNERS

 file://content/browser/conversions/OWNERS
-
-# TEAM: privacy-sandbox-dev@chromium.org
-# COMPONENT: Internals>ConversionMeasurement

content/browser/resources/media/DIR_METADATA

+monorail {
+  component: "Internals>Media"
+}

content/browser/resources/media/OWNERS

@@ -2,5 +2,3 @@ file://media/OWNERS
 tommi@chromium.org
 # For chrome://webrtc-internals related.
 hbos@chromium.org
-
-# COMPONENT: Internals>Media

content/browser/resources/service_worker/DIR_METADATA

+monorail {
+  component: "Blink>ServiceWorker"
+}
+
+team_email: "worker-dev@chromium.org"

content/browser/resources/service_worker/OWNERS

 file://content/browser/service_worker/OWNERS
-
-# TEAM: worker-dev@chromium.org
-# COMPONENT: Blink>ServiceWorker